Vehicle-brake.



' No. 838,061 PATENTED DEG.. 1,. 19%.

. T.' L.. a T. J'. STURIEHNTf v VEHICLE BRAKE. APPLIGAMOX runners?.1905.

UNITE sterne initio tieren.

THOMAS' LEGGETT s'riiii'iii'vaiir, or correr. aan reci/ias Josemi'-STURTavANn or wELLnsLaY, tfiiissiei-iosiirrs, assioiaons To 'STURTEVANTtnLL- conferir. or iioirriiatin, naitre, A (IcaroviiiiiiojN ce Manifs.

vei-iioieeeianvi.

Speccatonof Lettere Potent.

llateinted Een. il, 3.906.

Application filed Catcher 27; 3.905. ESTEL i110' Zlfi.

l'iil Imrovements inv Vehiele- Brakes, oi'

which t e following is a specification', reference being had therein tothe accompanying drawings. This invention relates to a brake forarresting the movement oi a rotating part, and

which is more especially adapted tor useiii connect1on`with automobilesor motorcars,

but which is also adapted for use 'for other' pu'iloses l e' presentinvention has iorits object to provide a mechanically-operatedfrictionbrake which is of suoli construction that the power exerted toset the brake may be derived from the 'rotating wheel or part themovementof which is to he arrested' restrained or from some rotatingwheeler part connected therewith or derin'ng motion therefrom, theinvent-ion preferably comprising means whereby the brake may he setwhether the said rotating part he moving in one direction or the other,so that it the3 brake be applied to a motor-vehicle the hrairing forcemay be exerted whether the vehicle be moving forward or backward. i Incarrying the invention into etliect a friction-band encircling the wheelor drum to which` the braking force is to he applied is preferablyemployed, the opposite ends of said friction-baiid being preferablyconnected to two operatinglevers7 either oi which may be moved to eiiectthe braking action or for setting thejiralie. 'lhese operu ating-leversare preferahlj)r to be actuated from a swinging;l segment, whichv isgeared to a shaft rovided' with a friction disk or wheel, pre erablyconstructed a clutch disk or wheel, to be forced into clutchingengagement with the wheel to which the braking force is to be applied7although the power derived from the moving wheel to he arrested ,andwhich power is exerted in settimo,l the brakemiight he transmittedthrough a frictionally-driv'en wheel instead of through a s l l lclutching ivlieei or disii. The rictionallydriven clutch or Wheelispreierably mounted on an endwisennov'aole shait, so that the Jfrictiondevice or clutch may he manually engaged with jtiieipart hij? which itis to be driven at anv desired pressure,-allowing a snit-able slipnetti/een the irictionally-driven and frictiondriving parte when only alight braking torce is to oe applied. li it be de'-\6o sired to controioniy the forward movements oi a vehicle 'oni single brakesett leveroperated oy the movement of the vehicle need he employed.

The invention .may

vertical section oi the saine on line 2 2, Fig. 7oy

Fig. 3 is a pian view of thechassis of an' i automobile comprising; theinvention.

Referring to the drawings, i2 denotes a lwheel or drum which, it will heunderstood,i is to be connected with the driving-wheels of -7 51.

the veliicie, so that will he in rotation whenever tiie vehicle is inmot1o'n, whether the engine or motor he running ornot, and A13 is ashaiit on which the said ywheeler drum is n rigidly mounted, so as torotate therewith. 8o.y

The rotating brake wheel or drum 12, tb which the braking force is aiplied, is, oi' course; -iocitedintermediate tie engine or motor andthe'vvheels pi the vehicle, as it would he seriously injurious toautomobiletires to apply brel lforce thereto.

le' denotes feiiieiitly acont to the wheel idl '--si.ttaeiied pinion l?,the outer end oi' the sai shait being encircled l) a spring "i8, havingi Wheel l e ont of engagement with the clutching4 portion of the wheelor drum 12. An crier--y -lever i9, which may-loe either a toot or everor vwhich 'in-ay be. actuated from a a head 20 on the outer end o the beunderstood hv rei'f'-v 65 erence to the accompanying drawings, in-

ine adapted for attach--' -inent to some siiitaolepart of the vehicle-Siidingly mounted inthe iraine go a tendency to hold t ie clutch disk or:l or button, is arranged to Dress zoo be forced inward to engage theclutch Wheel or disk 16 with the. wheel or drinn 12. Thel frame 14provided with a stud 21, on which rotates a pinion 7" meshiirnvr with agear-sector 23, attached to a rook-shalt 24, having bearings in theframe 14. Fixed to a sleeve 25 of the pinion 22 is an intermediategearwheel 26, meshing with the pinion 17 and servingto transmit motionfrom the said pinion to the said gear-sector through the pinion 22.

PivotallV mounted on the pins 27 in the frame 14 are two levers 2S and29, the lower arms 'of which are (,-onneeted with the opposite ends of abrake-band Bt), encircling the wheel or drinn 12, and between the upperends of said levers,v is an operating part: or abutment consistingr inthe present instance of a 'l'rictioieroll Iii, mounted on a pin 32,carried by an arm liti. lixed to the shaft 24, so that a rockingrmovement ofsaid shaft in either direction will operate one ol the levers2h or 2t) to cause the friction-band Si() to grip the wheel or drum .12.The resilience oi.E said lirictioiebaiul, which is prelerabl of steel,ill cause the said band to free, itsell' from lirietional contact withthe wheel or drum vl2 when an operating-lever is released, and suchresilience oll said band will also tend to move the upper ends of' saidleversl inward against Stopf: H on the i'rame 14 and one ol which vstops will serve as a resistancev to the inward movement ot' one oltsaid levers 2S or 2t) when the other lever is lorced outward to set thcbrake, in which case the brake-tanni will ol: Course pull on theopposite lever, to which it is connected.

The shaft 13, to which the brake wheel or drum 12 is attached, issuitablw1 connected with the cardt'in-shalt 2&5 through gearing in thegear-box t'i in an)Y .isual or suitable manner the said nearing being'also o ierativelv C t n t connected in aniY welhhnowu or usual maunerwith the shalt olt the motor or engine 3T,

and the said cardon-shafi 35 beinpl also eonnectcd or geared in :miYsuitable or wellknown manner with the rear axle or driving'- wheels ofthe vehicle. ln thus applying` the invention to an automobihI or motorvehicle, as hert-finbel'ort': rtlferred to, it will be .seen that thebrake wheel or drinn to which the braking?r force is to be applied islocated b; tween the motor or engine and the driving'- wheels of thevehicle.

The operation ol` the invention is as follows: ll'hen the driver desir(s to arri-.st or restrain tbe travel ot' the vehiel: whet her the sainebe moving either 'forward or backward, he operates the levi-r ln totorce the shaft 1.5 inward, (in thr torn; ot the invention herein shownand descrita-hi so as to engage the clutch wheel or disl; lo with theclutch-lace on the wheel or drinn l2'. and rotarwi moveimparted to theshaft 15 and from the latter, thmugh the pinion 17, gear-wheel 26, andIinion 22, to the gear-sector 23, so that the shaft 24 is rocked in onedirection or the other to actuate one or the other olt the levers 28 29,and thus tighten the brake-band 3() around the wheel or drum 12. lltonly a slight braking movement be desired, of course the manual powerwillbe only gently appliedto the lever 19, so that there will be more orless Slip between the clutch wheel or disk 16 and wheel 12, and thusonly a light braking force will be exerted; but if it be desired to Setthe brake powerfully of course the lever 19. will be so operated as topress the clutch wheel or disk 16 inward aga-inst the clutch-face of thi wheel or drum with considerable force. Owing to the fact that thebraking power of the shalt 15 is transmitted from the pinion 17 on shaft15 to the 4war-sector 23 through the large fnrear-wheel 2U and thepinion 22, rotatnu,r with said gear-wheel, it will be evident that whilethe speed ot' movement of said shaft 15 will be greatly reduced whenreceived by said gear-sector the power in applying the braking: forcewill be vastly increased or multiplied, thus providing for a greatpurchase or power to set the brake t when required to arrest thenio-vement. oil' the vehicle quickly.

From the ioregomg it will be understood that the invention providesmeans whereby.

within wide limits an)r4 desired amount of braking torce ma \Y bemechanically applied lor the purpose olc arresting or restraining themovement of a. vehicle which may be moving in either direction,the-momentum or moving force ot' the vehicle itself or of the 'motor be-IOO ing utilized l'or the purpose of settling thev brake. so that thelSaid brake can be Setv or applied whether the motor or engine ol' thevehicle be in opeation or not. In other words` it will be understoodthat the force necessary to set the brake will generallyA be derivedl'rom the momentum of the moving vehicle and not necessarily from theengine. or-metor driving Stich vehicle.- 1t will also be apparent `thatthe application of this engine or momentum utilized force may beregula-ted or controlled from an)1 convenient operating?r lever or rod bv which the clutching or driving parts are torced into lrictienrilcnjgagement. the frictional pressure being,T onljv ,gently exerted whena light braking torce is ,lesired, but beingl more loreiblv exertethnient is through .said clutch vwheeler disk it)I i thisy speeilieationare to be understood as rettl i "'35 said rotaing ferringto itlierailiand or foot operated desY vice for causing the friction deviceor'clutcbl element to engage the rotating arttc be arrestedorrestrained, so that tie ower derived from suoli rotating part willeutilized v to arrest or restrain its rotation or movement. y

Having tlius described our invention, we claim and desire to secure byLetters Pat- 1o. enty i. ln a motor-vehicle brake mechanism, thecombination with a friction brake device and a rotating brake wheelor'drum located between the engineer motor of the vehicle and thedrivingfwlieels thereof, of means, comprising a riction-clutcli`andmultiplying gearing, whereby the movemcntof a rotating part maybeutilized to apply brakingI force, with increased leverage, to saidbrake wheel. zo or drum, for the purpose of arresting or restrainingmovement of' the vehicle.

2. In a motor-vehicle brake devices-the 1 lcombination with a brakewheel or drum sepi crate-inem but connected with the driving- Wheels ofthe vehicle, of a friction brake denvice, means whereby -power derivedfrom a rotating part may be utilized to applyl said brake device to saidbralge Wheel or drum,

, 'said means comprising a Iriction-clutch one 3o element ormemberofvwliicli is formed on said 'brake wheel' or drum' and the other eleLment or member oi" which is carried by an endwise-movable shaft, andpower1nultiplying gearing, whereby tliepower derived from part will beincreased in applying said brake device to said brake wheel-ordrum whenthe movement ci' the vehicle is to ,be restrained in a motor-vehiclebrake, the combina dition with. a friction brake device, of a rotating.brake wheel or drum separate from but, connected with tlie wheels ofthe vehicle and deriving motion from the vehicle or its motor, andmanually-controllied means, coinpricing a *irictiomclutcln whereby powerderived from a rotatin'gpart may beutilized to apply said brake tosaidbrake Wheel or drum sothatwlien the motive power of the vehicle is shutoff the brake may still be applied by 5o the motion and momentum ofthavebicle itself. 'l

4. ln a motor-veliicle brake mechanism, the combinationwitna frictionbrake device, and a brake wheel or drum to which said 55, breite deviceis to be applied, and which-is separate from but connected With'thewheels lof the vehicle, vsaid brake wheel or drum be ing constructed toform one element 'or member of a friction-clutch, of manuallyfconootrolled meansfcomprising a friction-cluth disk,'an endwi'sefmova'bleshaft by which said friction-clutch dislris carried, Vandpyower-increasing gearing. operated from saidshaft,A whereby themovement of a rotating'part v said braise wheel or drum, anendWise-movable shaft on which-'the other member oisaid tion to sailing-levers connected with Vthe said restrain its movement.

`may beutilized, with ready-increased lever- 6 5 age,l to' apply the saibrake device for the pur ose vof arresting 'or restraining movement of te vehicle.

5. ln a motor-veliicle brake mechanism, the combination with anictionbralie device and a brake wheel or drum constructed te form oneelement oafrictiomclutch, a friction-clutch disk, l'an endWise-movableshaft byt'liicb said friction-clutch disk'- is carried, a pinion on saidshaft, a geaiewheel meshing 7 Vwith said pinion, a second pinion drivenfrom said gear-\vl1eel, a sectongear meshing said' second pinion, andmeans, connected witl'i'eaid sector-gear, forsapplying braking force tovsaid brake Wheel or drum.

6. In a vehicleebraiie device, the combination with 'a brake Wheel ordrinn, of a bralref' band for applying frictionlthe'reto, vafrictionclutch'one member of which is Jf'ormed on clutch ismounted,'manually-operated means for causing frictional engagement ofthe me1nbers of said clutchf, and connections between said shaft andsaid brake wheeler drum by which4 the momentum ormovcment thereof4 maybe utilized to arrest or restrain its move-A ment.

71 In a veliicle-brake, the combination with a rotating brake wheel o1'drum located '95 between the motor and the driving-wleels of l thevehicle of a brake-bandfo'r applying fricd brake -wl'ieel or drum, afriction; i clutch one member of which is formed o n said brake Wheel ordrum, an endWise-movable shaft on which the other member of said7 clutchis mounted, manually-operated means for causing r'ictional engagement ofthe members o'r said clutch, oneor more o eratrakeband, and a train ofpower-increasing gearing and connections for actuating said levers;

IOO

.whereby tbemomentum or' said brake Wheel or drum, or of the vehicle',maybe utilized to arrest or restrain movement or'lsaid vehicle. 'i E. Ina vebiclebrake, the combination with-a rotating braliewheel or drum, ofa lbrake-band for applying Jfriction thereto, a

friction-clutch? an endwise-movable shaft on which one member of saidclutch is mounted, manuallyfoperated means for 'causing Vffici -tionalengagement of' the memberso said clutch, operatingdevers connected withthe opposite ends of said brake-band, a swinging geansector connectedWith said levers, and a train ofgearin connecting' said endwise-movableshaft Wit. saicvlsectonvvvhereby the Ino- ,mentum or movement' of saidrotating brake wheeler drum may be utilized to varrest-or 9, In avehicle-brake mechanism and in combination, a brake wheel or drum,abrakeband .encircling said wheel or'ilrurn, levers conected with bothends of said brake-band, In testimony whereof We affix our signastopsagainst which one or the other of said tures in plesenceof twowitnesses. levers takes a fixed bearing, according to the l THOMASLHGGETT SIUR'IEv'ANT.

Y i dlretmn oi rotation Qt said brake heel or THOMAS JOSEPH STURTEYANT.

drum, und a friction-clutch device and G011- nections through whichsaid. levers are oper- Witnesses: ated to tighten said brake-band bypower de'- L. H. STURTEVANT,

rived from said whel ondl'um. y HUBERT M. GAY.

